Hillsdale Reservoir Water Level Today
Kansas · near Olathe · At full pool
- Elevation
- 916.87 ft
- From full pool
- −0.13 ft
- Percent of pool
- 99.7%
- 24-hour change
- −0.03 ft
- 7-day change
- +0.02 ft
- Reading
- Sep 21, 2026 · USACE
Last year at Hillsdale Reservoir
Hillsdale Reservoir is at full pool, 916.87 ft, down 0.03 ft in the last 24 hours. That puts the lake at 99.7 percent of its conservation pool. The top of the flood pool is 14.1 ft higher, at 931.00 ft.
Over the last 7 days the level held steady, and over 30 days it fell 0.49 ft. In the 399 days of readings on this page the high was 920.34 ft on Jun 3, 2026 and the low was 915.48 ft on Nov 20, 2025, a range of 4.86 ft.
The reading is the U.S. Army Corps of Engineers gauge at Hillsdale Dam & Reservoir, near Olathe, taken Sep 21, 2026 and referenced to the LOCAL datum. This page is rebuilt once a day from the agency feed; it is not a live gauge, so during a fast rise or a scheduled release check the USACE page for hourly values.
Hillsdale Reservoir pool elevations
| Current elevation | 916.87 ft |
|---|---|
| Full pool (top of conservation) | 917.00 ft |
| Top of flood pool | 931.00 ft |
| Bottom of conservation pool | 868.00 ft |
| Top of dam | 952.20 ft |
| Inflow | 50 cfs |
| Outflow | 24 cfs |
| 30-day change | −0.49 ft |
| 1-year high | 920.34 ft (Jun 3, 2026) |
| 1-year low | 915.48 ft (Nov 20, 2025) |
| Vertical datum | LOCAL |
| Operating agency | U.S. Army Corps of Engineers, NWK district |
Source: U.S. Army Corps of Engineers. Read what full pool and flood pool mean.
More lakes in Kansas
- Cheney Lake 1,420.12 ft, −1.48 ft from full
- Milford Lake 1,146.06 ft, +1.66 ft from full
- Tuttle Creek Lake 1,079.45 ft, +4.45 ft from full
- Big Hill Lake 857.17 ft, −0.83 ft from full
- Cedar Bluff Lake 2,118.58 ft, −25.42 ft from full
- Clinton Lake 876.07 ft, +0.57 ft from full
Hillsdale Reservoir level questions
What is the water level of Hillsdale Reservoir today?
Hillsdale Reservoir is at 916.87 ft as of Sep 21, 2026, −0.13 ft relative to full pool (917.00 ft). The 24-hour change is −0.03 ft.
What is full pool at Hillsdale Reservoir?
Full pool, the top of the conservation pool, is 917.00 ft (LOCAL). Above that, water is stored temporarily in the flood pool up to 931.00 ft. The bottom of the conservation pool is 868.00 ft.
Is Hillsdale Reservoir rising or falling?
Over the last 24 hours the level is −0.03 ft; over 7 days it held steady, and over 30 days it fell 0.49 ft.
Where does this Hillsdale Reservoir level come from?
From the U.S. Army Corps of Engineers (USACE) public data feed for Hillsdale Dam & Reservoir. Lake Levels Today republishes the agency's daily value without adjustment and links to the source below.